Macports renames GHC's Haddock name to haddock-ghc. So, we use this name to detect haddock.
If Macports and any other package system use haddock for GHC's haddock name, we revert this change soonly.
This patch contains the following changes:
M ./configure +4
darcs-hash:20081109053523-c1071-30e9929c0629135ab4b65c8b6f27ca79820cd900.gz